Rainbow Dash finds herself on a strange and desolate series of islands. With no other soul on the islands she reluctantly befriends a bookworm named Artus, a human with a strained family life behind him. While communicating via a page transmission inside a link book he informs Rainbow Dash that these islands that he calls Myst are his and his wife's creations and that he need her to find him a special book and return it to his lab.

To accomplish this Rainbow Dash needs to do what Artus had the mysterious Stranger do when he came to one of the Myst islands long ago, solve it's clever puzzles. But do the impulsive Pegasus pony have the patience to wait for slowly opening book shelves, reading dragged out text sections and remembering patterns seen hours ago? And do the usually patient Artus have the social competence to calm down as he watches Rainbow Dash brute force her way through his puzzles?

With no way back to Equestria, nor any other help than the half crazy egg headed human the question burns within the Pegasus pony. What if she fails? Will she ever see her family and friends again?